Final answer:
A total of 9 chaperones are needed for the field trip, as there are 8 groups of 5 students and 1 additional smaller group.
Step-by-step explanation:
When 41 students go on a field trip and are divided into groups of 5, to determine the number of groups, you divide the total number of students by the number in each group. Dividing 41 by 5 gives us 8 groups with one remaining student, who forms a smaller group on their own. Hence, there are 8 full groups plus 1 extra group. Since one chaperone is assigned to every group, the number of chaperones needed will be equal to the number of groups. Therefore, 8 groups plus the extra group requires 9 chaperones in total for the field trip.